Duplex disk valve



y 1932- H. D. RICE, JR., ET AL 1,857,952

. DUPLEX DISK VALVE Filed Sept. 4. 1951 2 Sheets-Sheet l Inventor; flu. Fz ceJ'fr d: M. Babb y 1932- H. D. RICE. JR.. ET AL 1,867,952

DUPLEX DISK VALVE Filed Sept. 4. 1931 2 Sheets-Sheet 2 0% Li F/q.4, T

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1']: lfBafifi flllomey Patented July 19, 1932 UNHTED STATES PAT? F'ECE HUDSON DONPHIAN RICE, JR., AND JAMES MADISON BABB, OF DALLAS, TEXAS DUPLEX DISK VALVE Application filed September 4, 1931.

This invention relates to an improved valve which is especially adapted for use in a rotary type engine.

The purpose of the invention is to provide a dual sectional valve designed to promote more expeditious operation, whereby to permit opening and closing of the port in approximately one half of the time required by the single disk type valve now employed in engines of the rotary type.

The specific elements selected for accomplishing the desired results will become more readily apparent from the following description and drawings.

In the drawings:

Figure 1 is an elevational view of the preferred embodiment of the invention.

Figure 2 is a plan view thereof with the pitman removed to disclose otherwise obscured parts.

Figure 3 is an edge or side elevational view showing the operative position of the novel valve in the motor.

Figure 4 is an ensemble sectional view showing the companion disks forming the novel duplex valve.

Figure 5 is a fragmentary elevational view disc-losing a slightly different type of pitman or tappet rod.

In carrying the invention into actual practice, I provide a pair of duplicate companion disks 6 and 7 these being provided with eccentric marginal apertures 8 and 9 adapted for registry with each other when the valve is open as seen in Figure 1. There is a concentric stem 10 carried by the disk 7 and extending through and beyond a tubular stem 11 on the disk 7. I provide two different forms of actuating devices. The device shown in Figures 1 to 3 inclusive may be designated as a pitman and it comprises a rod 12 mounted for reciprocatory action and provided with a head 13 carrying an open-ended elongated box-like portion 14. This portion 14 forms a guide and acts to accommodate the anti-frictional rollers 15. I provide a pair of cam rollers for each of the actuating arms 16 and 17 These arms are suitably offset and shaped as indicated in Figure 2 so as to dispose the longitudinally spaced Serial No. 561,278.

pairs of rollers in proper longitudinal alinement. The arms are provlded at their inner ends with collars 18 and 19, collar 18 surrounding and being fastened to the tubularstemll and the collar 19 being keyed to the solid stem 10. The arms are also provided with complemental lugs 20 and 21 spaced apart to accommodate an expansion coil spring 22 which is attached thereto. This spring constitutes a return means and resists the outward spreading of the arms 16 and 17 when downward pressure is brought to bear on the push rod 12. Incidentally when the parts are in the position illustrated in Figure 1, the apertures 8 and 9 of the disks 6 and 7 register to provide an open port. however, an upward thrust is brought to bear on the pitman rod 12 this operates the disks When, I

6 and 7 in opposite directionsto produce the desired relative oscillatory action, and it requires but a slight oscillatory action to cause the disks to rotate sufliciently to close the apertures 8 and 9 as isobvious.

If, instead of using the pitman arrangement just described, the desired sensitivity of operation or the quick opening and closing of the valve is not acquired, we suggest the use of one of the type illustrated in Figure 5. Here the rod is denoted by the numeral 23, this being formed with an integral segmental head 24 formed with a pair of downwardly converging cam slots 25 and 26 adaptedto receive the rollers 15 whereby to provide the desired guide and track action. The gist of the inventive conception, it will be observed, is in the provision of a dual or double-acting valve embodying a pair of companion disks disposed in contact with each other and concentrically connected together'for opposite Os. 1

to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in con nection with the drawings. Therefore, amore lengthy description is regarded as unnecessary.

Minor changes in shape, size, and rearrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired.

What is claimed is:

1. In a valve and operating structure of the class described, a pair of duplicate rotatable disks disposed in contact with each other, said disks having registrable margins al apertures, one disk being provided with an outstanding concentric solid stem, the other disk being provided with an outstanding concentric tubular stem, said solid stem extending through and beyond the tubular stein, a pair of operating arms, said arms being provided at their inner ends with collars, one collar being rigidly attached to the solid stem, and the other collar rigidly attached to the tubular stern, spring means associated with the collar equipped ends of said arms for urging the arms in one direction, the opposite ends of said arms being provided with cam and anti-friction rollers, and a reciprocatory pitman rod "for moving said arms in the opposite direction against the action of said spring means having guide means with which said rollers cooperate.

2. In a valve and operating structure of r the class described, a pair of duplicate disks rotatably disposed in contact with each other, said disks having registrable marginal apertures, one disk being provided with an outstanding concentric solid stem, the other disk being provided with an outstanding concentric tubular stem, said solid stem extending through and beyond the tubular stem, a pair of operating arms, and said arms being provided at their inner ends with collars, one collar being rigidly attached to the tubular stem, spring means associated with the collar equipped ends of said arms for urging said arms in one direction, the opposite ends of said arms being provided with cam and anti friction rollers, and a reciprocatory pitman rod for moving said arms in the opposite direction against the action of said spring means-having guide means with which said rollers cooperate, said guide means comprising an elongated open-ended hollow box-like member having guide tracks with which said rollers have slidable contact.

3. In a valve and operating structure of the class described, a pair of duplicate rotatable disks disposed in contact with each other, said disks having registrable marginal apertures, one disk being provided with an outstanding concentric solid stem, the other disk being provided with an outstanding concentrlc tubular stem, sald solid stem extending through and beyond the tubular stem, a pair of operating arms, and said arms being provided at their inner ends with collars, one collar being rigidly attached to the solid stem, and the other collar rigidly attached to the tubular stem, spring means associated with the collar equipped ends of said arms for urging said arms in one direction, the opposite ends of said arms being provided with cam and anti-friction rollers,

and a reciprocatory pitman rod for moving said arms in the opposite direction against 1 the ction of said spring means having guide 

